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(11) | EP 2 789 871 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Bicycle disc brake apparatus |
(57) The present invention provides a bicycle disc brake apparatus (1) comprising a U-shape
elastic plate (2) having two ends connected to two ring portions (22); the ring portions
comprising through holes (23); the U-shape elastic plate comprising two brake pads
(20) abutting the ring portions; two compression discs (3) outside the U-shape elastic
plate and adjacent to the ring portions, comprising protrusions (31) penetrating the
through holes to act on the brake pads, compression disc rotating slots (32) away
from the protrusions and first guiding tread surface (321) in a first direction; two
roller seats (4) adjacent to the compression discs and comprising roller rotating
slots (42) adjacent to the compression disc rotating slots; rollers (40) provided
between the rotating slots; the roller rotating slots having second guiding tread
surface (43) in a second direction opposite to the first direction with protruding
columns; two bearings (5) mounted on the protruding columns; and two sealing gaskets
(6) sealed onto the bearings away from the roller seats.
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